Heater



' W. BLASEK ET AL HEATE R 4 Sheets-Sheet 2' Filed July 2, 1928 Jan. 29,1929. 1,700,482

. W. BLASEK ET AL HEATER Filed July 2, 1928 4 Sheets-Sheet 5OCOOOOOOOOOOO DOOOOOOOCOQQOOOOOOO M M %Z.

W. BLASEK ET AL Jan. 29, 1929.

HEATER Filed July 2, 1928 4 Sheets-Sheet 4 9o MIME/V TORS: 6

KW lANN gm i @r as Patented Jan. 29, 1929.

iii T ED STATES PATENT OFFICE.

WILLIAM iBIJA EK AND JOHN BORISCH, OF CINCINNATI,- OHIO.

-HEATER. I

Application filed. July 2, 1928.

' understood from the following description and claims, and from thedrawings, in which Fig. 1' is a front elevation of our improved device.

Fig. 2 is a side elevation of the same.

Fig. 3 is a plan view of the same. I

l is a plan view of the same, with the top thereof removed.

Fig. 5 is a horizontal cross-section of the same, taken on the line 5-5of Fig. 1.

Fig. (5 is a horizontal cross-section of the same, taken on the line 66of 1.

Fig. 7 is a cross-section of thesame, taken on the line 77 of Fig. 1.

Fig. 8 is a vertical section of the same, taken on the irregular line8-8 of Fig. 1, partly broken away.

Fig. 9 is a perspective view of the same, partly broken away.

Fig. 10 is a vertical section of a detail of the same, taken in theplane of the line 10-10 of Fig. 8; and,

Fig. 11 is a vertical section of a detail of the same, taken in theplane-of the line 1111 of Fig. 4.

21 is an upper transverse shell and 22 isa lower transverse shell. Thelower wall 23 of the upper transverse shellis provided with a pluralityof sets of openings'at the respective sides of said shell, the openingsof'said respective sets of openings being designated v 24-, 25, 26, 27.The lower wall of the upright shell is also provided with a centralopening 28, and the upper wall 29 of the upper shell is provided with aflue-opening 30, the wall of which is provided with a flange 31 forreceiving a flue 32.

The upper wall 35 of the lower shellis provided with a set of openingsat each .side of said lower transverse shell, the openings of saidrespective sets of openings being designated 86, 3?, 38 and 39. It isalso provided Serial .No. 289,625.

with a central opening 40. The upper shell .and the lower shell arepreferably formed of sheet metal. A set of pipes is located at each sideof the heater. The pipes of these respective sets of pipes arepreferably of sheet metal and are designated respectively 41, 42, 43,44. The upper ends of the pipes of these respective sets of pipescommunicate with the openings of the respectivesets of openings in thelower wall of the upper shell, and the lower ends of the pipes of theserespective sets of pipes communicate with the openings of the respectivesets of openings in the upper wall of the lower transverse shell.

The connections between the respective ends of the pipes and said wallsare preferably made by providing each of the walls of the openings witha flange 46, by bending the margin of said opening. ends of the pipesare received about these flanges, a washer 47 being received between theend of the pipe and the wall of the shell at said flange. This washermay be a suitable filling to :form a tight oint between the end of thepipe and the shell, and may for instance be an asbestos washer.

A fire-drum 51 is located between the shells and between the pipes. Itsupper end communicates with the intermediate opening 28 inthe lower wallof the upper transverse shell, and its lower end communicates with theintermediate opening 40 in the upper wall of the lower transverseshe'll. This fire-drum may be in the form of a tube and be composed of apiece of metal pipe,'=for instance, drawn tubing. Themargin of theopening 28 and the mar-gin of the opening 40 are each bent to form aflange55 received within the respective ends of the fire-drum. Asuitable filling 56, for instance, in the form of an asbestos washer, isreceived between each end of the fire-drum and the walls of therespective intermediate openings 28 and 40, for forming close jointsbetween the respective ends of the fire-drum and said walls. i

The upper shell is provided with transverse partitions 61, 62, in whichthere are openings 63, 64. Dampers 65, 66, are pivoted at saidrespective openings, for instance,

The respective 75. The arm 71 is shown provided with a handle 76. Thedampers are preferably normally positioned at right angles to eachother, and are so arranged that when one damper is open, the otherdamper is closed.

The upper shell preferably also has up right partitions 81, 82, thereinextending between the partitions 61, 62, for forming passageways 83, 84,respectively between the up per ends of the pipes 42, 43. The innerportions of the partitions 61, 62, and the partitions 81, 82, form asupporting structure between the upper and lower walls of the uppershell 21 about the upper end of the fire-drum.

The lower shell is provided with an upright partition 86, which forms amedian support between the upper and lower walls of the lowor shellabout the lowerend of the fire-drum, for acting as a support for thelatter and strengthening the structure of the lower shell. The partition86 has a rear rounded portion 8? under the rear rounded portion of thefire-drum and side walls, which extend forwardly from the roundedportion 87 and connect with the front wall of the lower transversesection. The partition 86 is provided with an upper flange 90 and alower flange 91, which. are respectively welded to the upper wall andlower wall of the lower transverse shell and the front ends of the sidewalls thereof, are each provided with a flange 92 which is welded to thefront wall of the lower transverse shell, for forming a gastight jointbetween the partition 86 and the lower shell. This structure forms anash-pit 93. An ash-drawer 94 is received in the ashpit. The front wallof the ash-drawer is provided with vent openings 95 provided withadjustable shutters. Transverse partitions 96, 97, are located betweenthe side walls of the lower shell and the side walls of the par tition86.

Connecting rods 98 connect the shells, pipes and lire-drum. They arepreferably located outside the fire-drum and between the firedrum andthe pipes. They are provided with heads 99 at one of their ends, theirother ends being threaded for receiving nuts 100. The heads are shownunder the lower wall of the lower shell, and the nuts are shown on theupper wall of the upper shell. In this manner the shell, the pipes andthe lire-drum are drawn together and the joints between the samesecurely closed, for preventing the escape of gas and making the jointsair-tight.

A transverse passage 101 is formed in the front portion of the uppershell communicating with the fire-drum, when the damper is open, andwith. the upper ends of the pipes 41. The upper ends of the pipes 42 areclosed from the upper ends of the pipes 41 by the transverse partition61. Passageways 104, 105, are formed in the front part of the lowershell between the lower ends of the pipes 41 and the lower ends of thepipes 42, at the respective sides of the lower shell. The upperpassageways 83, 84, connect the upper ends of the pipes 42 with theupper ends of the pipes 43.

A transverse channel 107 is formed in the rear portion of the lowershell between the lower ends of the pipes 43 and 44 at both sides of thelower shell, and forming passageways 108, 109, between the lower ends ofthe pipes 43, 44, at the respective sides of said lower shell,permitting the heat in the products of combustion to spread crosswise ofthe upper wall of the lower shell and the rear wall and side walls ofthe same for aiding in exchange of heat. A transverse channel 110 isformed by the transverse partition 62 between the upper ends of thepipes 44 and the flue for escape of the products of combustion. Thedirections of the products of combustion are indicated by the arrows.

It will thus be seen that the heat from the products of combustiontraverses the front portion of the upper shell and descends through thepipes 41 to the front portion of the lower shell, and is then caused toascend the second pipes 42 of said sets of pipes, then passes rearwardlyalong the side portions of the upper shell and descends through thethird pipes 43, and is then permitted to spread throughoiilt the rearportion of the lower shell,

the products of combustion then ascending the rear pipes 44, andspreading in the rear portion of the upper shell and passing up theflue.

The shells and pipes are preferably constructed of comparatively thinsheet metal and have substantially all their outer surfaces exposed tothe atmosphere, so that extreme amount of heat exchange is obtained, andthe fire-drum is also preferably constructed out of sheet metal or drawntubing or metal pipe, so that an extreme amount of exchange of heattakes place between it and the atmosphere, it being noted that the outersurface of the fire-drum is also exposed to the atmosphere.

A top 111, which is preferably shell-like, is arranged to rest upon theupper shell and is provided with a recess 112 for accommodating theflue. It has side walls 113 provided with holes 114 and a slanting upperportion 115 provided with perforations 116 for dif fusion of the heattherein. i

Our improved device is arranged for burning solid fuels, such as coal,wood or the i like, or for burning fluid fuel, whether liquid orgaseous. Thus a grate 121, shown as a round grate, is pivoted on apivot-bolt 122 in the fire-drum, and is provided with a pivotstem 123 ina bearing 124 in the fire-drum, the pivot-stem having a handle 125 fixedthereto'for tilting the grate. The handle is provided with a pin 126arranged to be re ceived in respective holes 127, 128', on an arcpiece129 secured to the drum.

1 ,vooase A fluid fuel burn'er 131 projects through an opening 132 inthe drum and is located below the grate, being located preferably in thevertical plane in which the pivotal axis of the grate located. Theburner is preferably provided with a suitable air mixer 133 of usualconstruction, into which a gas burner 13 1 is received, and soconstructed as to properly mix the gas and air when the fuel emergesfrom the burner 131. A usual perforated air-regulating disk 135 may beprovided. A. gas-valve 13? may supply a regulated flow of gas or the gasmay be shut off entirely. A pilot light is arranged to be projected intothe lire-drum by a pilot burner 138 through an opening 139 in thefire-drum, the pilot burner being controlled by a valve 141-0.

When it is desired to burn solid fuel, the handle 125 is moved forregistry of its pin 126 with the hole 128 for positioning the grate inhorizontal position. If it is desired to burn fluid fuel, the handle 125is swung to cause its pin126 to register with the hole 12?, in whichposition the grate is swung into vertical position and across the innerend of the burner 131, for serving as a deflector for the gas and flamefromsaid burner for spreading the flame throughout the crosssectionalinterior of the fire-drum.

'llhe lire-drum is provided with a suitable fuel mouth 14:1,"arranged tobe closed by a hinged door 142. It is also provided with a vent-opening1 l3 arranged to be closed by a door 144. Runways 1 1-5 are located inthe ash-git 93 for receiving the ash-drawer 94-. The front wall of thelower transverse shell 22 is provided with an opening 146 normallyclosed by the front wall 147 of the ashdrawer.

The upper wall of the upper shell is provided with clean-outopenings 151, normally closed by removable closures 152. Each of the clean-outopenings preferably extends part-way across the upper ends of a pair ofpipes, so that two pipes may be cleaned by suitable brushes or othercleaning devices re ceived through one opening. The lower shell ispreferably provided with clean-out openings 155 in the respective sidewalls thereof, normally closed by removable closures 156. Each of theseclean-out openings preferably extends part-way crosswise of the lowerends of a pair of the pipes, so that a pair of pipes is accessiblethrough each of the clean-out openings 155, the cross-passages in thelower shell being also accessible from said openings.

The heating unit described may be sur rounced by a sheet metal jacket infurnace form and the heat delivered through suitable heating pipes tosuitable points, and the cold air delivered into the acket in suitablemanner. a

W hen starting the fire, or when maximum draftfor the tire is desired,the arm 71 is moved for opening the damper 66 and closing the damper 65,so that the products of combustion pass directly from the fire-drum tothe flue, and opening the door 144 and adjusting the shutters to openthe vent openings 95. lVhen heat is desired, the arm 71 is swung in theopposite direction for partly or wholly closing the damper 66 and partlyor wholly opening the damper 65,the door 144: being closed and theshutters for the vent openings regulated.

The lower shell may rest upon a suitable foot-frame 161 provided withfeet 162 for raising the lower shell from the floor and pern'iittingcirculation of air thereunder.

1. In a heater, the combination of upper and lower transverse shells,the walls'of said shells which are presented toward each'other providedwith openings at the respective sides of'said shells, pipes between saidshells in line with said openings, the ends of said pipes connected withsaid shells at said open lugs for forming passages, partitions in saidshells between the ends of said pipes, said partitions in saidrespective shells at tile respective sides of said shells locatedbetween successive pairs said. pipes at opposite ends of said pipes, alire-drum between said respective sets of shells, and a passage betweensaid lire-drum and the end ones of said pipes.

'2. In a heater, the combination of an upper transverse shell and alower transverse shell, the inner walls of said transverse shellsprovided with openings presented toward each other, pipes between. saidtransverse shells communicating with said openings, said uppertransverse shell provided with a flueopening, a lire-drum between saidtransverse shells, said lire-drum having a communication with said uppertransverse shell, dampers in said upper transverse shell between saidlire-drum and said pipes and between said lire-drum and saidflue-opening respectively, partitions in said lower transverse shellbetween pairs of said pipes, partitions in said upper transverse shell,pairs of said pipes opening into said upper transverse shell betweensaid last-named partitions, and a damper in said communication.

3. In a heater, the combination of an upper transverse shell, a lowertransverse shell, the lower wall of said upper transverse shell and theupper wall of said lower transverse shell each provided with a set ofopenings at each side of said shells, a setof pipes between said shellsat each side'of said shells communicating with said respective sets ofopenings, said lower wall provided with an intermediate opening, atire-drum between said shells and between said pipes communieating withsaid intermediate opening, said upper shell provided with aflue-opening, a amper in said upper shell between said firedrum and saidflue-opening, a damper in said upper shell at the opposite side of saidfiredrum, for controlling the passage of products of combustion fromsaid lire-drum to said pipes, partitions in said upper shell between theend ones and the intermediate ones of the pipes of said respective setsof pipes, and partitions in said lower shell between said intermediateones of the pipes of said respective sets of pipes.

4. In a heater, the combination of an upper transverse shell, a lowertransverse shell, the lower wall of said upper transverse shell and theupper wall of said lower transverse shell each provided with a set oiopenings at each side of said shells, a set of pipes between said shellsat each side of said shells communicat ing with said respective sets ofopenings, said lower wall provided with. an intermediate opening, afire-drum between said shells and between said pipes communicating withsaid intermediate opening, said upper shell provided with aflue-opening, a damper in said upper shell between said lire-drum andsaid flue-opening, a damper in said upper shell at the opposite side ofsaid fire-drum, for controlling the passage of products of combustionfrom said fire-drum to said pipes, partitions in said upper shellbetween the end ones and the intermediate ones of the pipes of saidrespective sets of pipes, partitions in said lower shell between saidintermediate ones of the pipes of said respective sets of pipes, theupper wall oi? said upper shell provided with clean-out openings in linewith said respective pipes, and releasable closures for said respectiveclean-out openings.

5. In a heater, the combination of an upper transverse shell, a lowertransverse shell, the lower wall oi said upper transverse shell and theupper wall of said lower transverse shell each provided with a seat ofopenings at each side of said shells, a set of pipes between said shellsat each side of said shells communicatling with said respective sets ofopenings, said of said respective sets of pipes, partitions in saidlower shell between said intermediate ones of the pipes of saidrespective sets of pipes, said lower shell provided with cleanoutopenings at the respective sides of said partitions in said lower shell,and releasable closures in said clean-out openings.

6. In a heater, the combination of an upper transverse shell and a lowertransverse shell, the lower wall of said upper transverse shell and theupper wall of said lower transverse shell each provided with a set ofopenings at each side of said shells, said lower wall of said uppertransverse shell provided with a central opening between said sets ofopenings, said upper transverse shell provided with a flue-opening atits rear, transverse partitions in said upper transverse shell. betweensaid central opening and the end ones oi? the openings of said sets oi":openings and said flue-opening respectively, a damper in each of saidpartitions, connecting means between said dampers causing combinedmovements of said dampers for respective opening and closing of saiddampers, transverse partitions in said lower shell between theintermediate ones of said openings or said sets of openings, a fire-drumbetween said transverse shells opening into said central opening, andupright pipes outside said fire-drum between said transverse shellscommunicating with the respective openings of said respective sets ofopenings.

In testimony whereof, we have hereunto signed our names.

WILLIAM BLASEK. JOHN BORISCH.

